Saturday, August 05, 2006

Cool clothing

Research funded by NASA could make life much more comfortable for anyone who has to wear bulky protective clothing. This means not just astronauts, but also fire-fighters, soldiers, and deep sea divers.

Protective suits can easily get too hot or too cold, but the new NASA-backed design promises to regulate a person's body temperature more efficiently. It would do so by targeting those areas that most effectively exchange heat.

The new suit would resemble a surfer's wet suit and contain pipes filled with conductive fluid linked to heat exchange coils. However, these exchange coils would only be positioned over those areas of their body best at transferring heat. The heat exchangers could then draw heat away from the body, or warm it up, more effectively, and the suit should be lighter and more comfortable to wear.

As a general rule, bone and blood vessels are good while muscle and fat is bad. So the exchangers would cover areas like the face, groin and chest but not the buttocks or any big biceps. But users could theoretically have suits tailored to their own temperature conducting body hot spots.

Sensors on the user's finger tips would keep track of temperature. An astronaut facing the hot Sun, for example, could even have heat transferred via the exchange coils from their hot front to their cooler rear, using the suit.

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